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3 years ago

What speed must an electron have if its momentum is to be the same as that of an x-ray photon with a wavelength of 0.30?

1 answer:

8 0

The momentum of the x-ray photon is p = h/lambda . Lambda is the wavelength (0.30nm=3x10^(-9)m) and h is Planck's constant,(h=6.62607004 × 10-34 m2 kg / s).The momentum is: 2.2 x 10^(-25).

The momentum can be calculated also as: p=mv, where m is the mass of the electron and v is the speed.

So v=p/m,p is known,and also the mass of the electron (m=9.10938356 × 10-31 kilograms).

v=2.2 x 10^(-25)/9.10938356 × 10-31 kilograms=0.24 x 10^6 m/s

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Explanation:

They will repel, meaning that they are made of an electrical conductor.

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2 years ago

Why are we buried in the ground when we die?

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2 years ago

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A proton in a particle accelerator is traveling at a speed of 0.99c.(a) If you use the approximate nonrelativistic equation for

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Answer:

a) p = 4.96 10⁻¹⁹ kg m / s , b) p = 35 .18 10⁻¹⁹ kg m / s ,

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Explanation:

a) The moment is defined in classical mechanics as

p = m v

Let's calculate its value

p = 1.67 10⁻²⁷ 0.99 3. 10⁸

p = 4.96 10⁻¹⁹ kg m / s

b) in special relativity the moment is defined as

p = m v / √(1 –v² / c²)

Let's calculate

p = 1.67 10⁻²⁷ 0.99 10⁸/ √(1- 0.99²)

p = 4.96 10⁻¹⁹ / 0.141

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c) the relationship between the two values is

p_correst / p_approximate = 35.18 / 4.96

p_correst / p_approximate = 7.09

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3 years ago

What is thermal energy?A hot potato at 100 ºF is placed in a bowl of soup at 80 ºF. The surrounding room is at 65ºF. Which corre

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Answer:

1. Thermal Energy is the internal energy that is produced from the temperature of a heated substance/object.

2. From the potato to the soup and from the soup to the surrounding room

Explanation:

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2. The atoms present in a hot object have higher kinetic energy when compared to a colder object and usually flow towards the colder object. This is why it is possible for the hot potato whose temperature is higher than the bowl of soup to flow towards the soup and from the soup to the surrounding room.

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2 years ago

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Answer:

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Explanation:

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2 years ago